Display screen or portion thereof with icon



FIG. 1 is a front view of a display screen or portion thereof with icon, showing our new design; and,

FIG. 2 is a front view thereof, in which a mobile terminal in broken lines is provided to illustrate an example environment.

The broken lines are for illustrative purposes only and form no part of the claimed design. The broken line drawing of the mobile terminal, application icon, and the symbol and otherwise images shown in broken lines in FIGS. 1 and 2 are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with icon, as shown and described. 